Rear bumper



FIG. 1 is a right, front perspective view of a rear bumper showing my new design;

FIG. 2 is a left, front perspective view thereof;

FIG. 3 is a right, rear perspective view thereof;

FIG. 4 is a left, rear perspective view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a left side elevational view thereof;

FIG. 9. is a top plan view thereof; and,

FIG. 10 is another right front perspective view thereof shown on a vehicle.

The portions of the vehicle shown in the FIG. 10 drawing view in a de-emphasized and half-tone form outside the broken lines and the broken lines representing the boundary and configuration of what is claimed as the design are all for environmental and illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a rear bumper, as shown and described. 